Brian O'Connor vs. Casey Sadler — Career Comparison

On the career pitching numbers, Casey Sadler posted a stronger line than Brian O'Connor. Casey Sadler posted stronger numbers in ERA (2.86 vs 5.11) and WHIP (1.162 vs 1.865). By the career numbers, Casey Sadler had the better of this comparison — though ERA and WHIP alone don't account for era, park factors, or the defenses each pitcher worked behind.